Improvement in sash-locks



Wme sse s mPEYERs. PHOTQUTHOGIAPMEA. WASHINGTON. D. C.

Nlrrnn STATES ERsTUs L. BROWN, OF NORWIOH, NEW YORK.

IMFSROVEIVI ENT IN SASH-LOCKS.

Specification forming part of Letters Patent No'. KOELQGE, dated December G, 1570.-

To @ZZ ,who/2z, t may concern:

Be it known Vthat I, E. L. BROWN, of Norwich, in the county of Ghenango, and in the State of New `York, have invented certain new and useful Improvements in Sash-Locks, and I do hereby declare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a front elevation, showing one side of a window-frame with the locks in position upon the upper and lower sashes; Fig. 2, a plan view of a front portion of the side rail of a sash and of the lock in position, fastening the sash; Fig. 3, a plan view of the under side of the look; and Fig. 4, a vertical cross-section on the linexx of Fig. 3, showing that part of the lock to the right of said line.

Like letters of like kinds denote like parts in each figure.

The nature of my device relates to'loeks for fastening either the lower or upper sashes of windows at any desired point; and the object sought to be attained is the production of a sash-lock which shall be cheap, simple, durable, and effective, which shall be applicable, without change of any part of it, to either upper or lower sashes, which may easily, and without the exercise of mechanical skill, be placed upon sashes, requiring for this purpose only the tools ordinarily found in households, which may be unlocked and fastened in that position, so thatboth hands may be used in raising or lowering'the sash 5 and my invention consists in the novel form and construction of the case, which is circular in form, with an opening on one side for the bolt, with a diaphragm which divides it into two cupshaped recesses, in the upper one of which the stud is protected from injurious contact, and in the lower recess there is ayoke upon the under side of said diaphragm to receive and guide the bolt, thereby avoiding the need of asecondV opening in the walls of the case, the whole cast in one piece, all as more fully hereinafter described.

In the drawings, A represents a windowframe; B, the upper and C the lower sashes of the same, each of ordinary construction; and D, the shell of my sash-lock, of whichthe following is a full and accurate description:

The case is annular in form,having walls a, the o utsides of whichslope inwardly a little from top to bottom, and in one of these walls, near its vertical center, au opening, b, pointing toward the center of the case, for the pas sage of th'e bolt. These walls are connected together by a diaphragm, c, which is arranged horizontally at a distance about one-third of the space between the top and the bottom of the walls, and divides the case into an upper chamber, d, and a lower chamber, e, This diaphragm has a slot, f, for the stud of the bolt, which slot is recessed at its outer end, g,

so as to hold the stud when the bolt is drawn back, and openings f for screws f, to hold the lock to the sash. This diaphragm has also secured to its under side, near its center, a yoke, h, provided with an opening, i, which receives the inner end of the bolt. The bolt, which is denoted by the letter E, has a head, j, occupying about one-half of itslength, a rightangled shoulder, 7c, where it is joined to the neck I, which is of lesser diameter than the head, and a threaded opening at its inner end. f

into which the stud is screwed. Vhen placed in position, the head protrudes through the opening b in the walls of the case, andthe neck protrudes through the opening c in the yoke. Between this yoke and the shoulder k a spiral spring, F, is wound around the neck of the bolt, 011e end of which spring rests against said yoke and the other against the shoulder before spoken of. A stud, Gr, fastened to the inner end of the neck of the bolt, as described, and protruding through thcslot j', with its head upon the upper side thereof,

serves as a handle by which to withdraw the bolt.

This lock is placed upon the sash by boring a hole in the side of the rail of a suitable size for its reception, and a smaller hole in the edge of the rail for the bolt. The stud isunscrewed from the bolt, when the latter, with its spiral spring, may be removed.' The case is then placed in the holemade for it, the bolt, having the spiral spring around its neck, is inserted in the opening in the wall of the case from the outside, the stud is screwed into the bolt, and the case fastened to the rail. The case should in all instances beinserted far enough to bring its outer face in line with the surface of the rail. Suitable holes for the reception of the .head of the bolt for locking the sash may be placed at such points as will be most convenient in the casing of the window,

The case is cast in one piece, of suitable metal, including the yoke; but I find it cheapest to cast them of iron, as shown in the model exhibited herewith. The openi ng in the wall of the case for the bolt is bored out in the usual manner, and a smaller tool inserted afterward in this opening serves to bore out the opening in the yoke for the neck of the bolt. The bolt may be either of cast or wrought metal, as suits the convenience of the manufacturer; but I iind it cheapestto strike them up with suitable dies.

The advantages of the peculiar construction ol the case are as followsi It is cast in one piece,

and therefore has the greatest strength with the least weight `and the smallest cost. Its circular form not only adds to its strength, but makes it more convenient to put upon the sash. The diaphragm also adds greatly to its strength, whereby all parts may be made lighter. In addition, it gives an upper chamber, in whichv the studs may be out of the way, so that the lock may be iitted to an uppersash, and a lower chamber, in whichthe bolt and spring are arranged strongly and securely within a yoke making a part of the case.

The advantages ot' the bolt and spring consist in their simplicity of parts and ot' construction, by which the bolt and spring may be placed in the case while it is upon the sash, and also in their cheapness and efficiency.

The advantages of the whole lock consistin its adaptability to upper and lower sashes, in the fact that lits normal condition is that ot' locking, that it may be fastened back when unlocked7 so that bot-h hands may be employed to raise or lower the sash, in its cheapness, its durability, and in its eficiency.

I am aware that sash-locks have been made with circular cases, with cases adapted for putting on by the use of boring-tools, and with an arrangement of bolts and springs somewhat resembling mine, and I do not claim the `specie or general features of such. rIherefore NVhat I regard as novel therein and claim as my invention is* The circular case D, provided with the diaphragm c, the slot f, the opening b, and the yoke 71, all cast in one piece and combined with the bolt j, substantially as described and shown, and for the purposes set forth.

In testimony that I cla-im the lbregoing I have hereunto set my hand this 29th day oi' October, 1870.

Il {ASLUS L. BRCHVN.

lVitnesses:

IG. (l. Bnoons, A. ll', Goonwlx. 

